Impact of Electron Beam Irradiation on Thermoplastic Polyurethanes Unraveled by Thermal Field-Flow Fractionation

被引：4

作者：

Geisler, Martin ^{[1
,2
]}

Pal, Tuhin Subhra ^{[3
]}

Arnhold, Kerstin ^{[1
]}

Malanin, Mikhail ^{[1
]}

Mueller, Michael Thomas ^{[1
]}

Voit, Brigitte ^{[1
,2
]}

Pionteck, Juergen ^{[1
]}

Lederer, Albena ^{[1
,2
,4
]}

机构：

[1] Leibniz Inst Polymerforsch Dresden Ev, Hohe Str 6, D-01069 Dresden, Germany

[2] Tech Univ Dresden, Fac Chem & Food Chem, D-01062 Dresden, Germany

[3] Indian Inst Technol, Rubber Technol Ctr, Kharagpur 721302, W Bengal, India

[4] Stellenbosch Univ, Dept Chem & Polymer Sci, Private Bag X1, ZA-7602 Matieland, South Africa

来源：

POLYMER DEGRADATION AND STABILITY | 2021年 / 183卷

关键词：

Electron beam irradiation; Thermoplastic polyurethane; Degradation; Crosslinking; Chain scission; Size-Exclusion Chromatography; Field-flow fractionation; Differential Scanning Calorimetry;

D O I：

10.1016/j.polymdegradstab.2020.109423

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The impact of electron beam irradiation on thermoplastic polyurethane material was studied for both an aliphatic and an aromatic polyurethane with approximately equal molar amount of hard and soft segments. Irradiation doses up to 300 kGy (kilogray) at room temperature and at 100 degrees C were applied. Changes in chemical structure, molar mass and size were assessed using infrared spectroscopy, differential scanning calorimetry, size-exclusion chromatography and thermal field-flow fractionation. Material alterations were correlated with trends regarding to degradation, crosslinking or branching changes. Thereby, limits of characterization by size exclusion chromatography are addressed and amended by thermal field-flow fractionation studies. In addition, a thermophoretic analysis has been carried out complementary to the portfolio of analytical methods applied in this work. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：11

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